Thanks for actively responding, @jim52. As an insight, the auto-fill feature will autofill fields from the last item you ordered as it should. Since your's isn't auto-filling fields, I'd suggest you use an incognito or a private browser to isolate the issue.

It could have something to do with temporary internet files stored in your browser's cache. QuickBooks uses it to load the page faster. However, they sometimes cause issues with certain web pages when it gets full. 

Here's how to open a private window and check to see if your autofill feature's working:

• Google Chrome: Ctrl + Shift + N
• Mozilla Firefox: Ctrl + Shift + P
• Microsoft Edge: Ctrl + Shift + P
• Safari: Command + Option + P

If the vendor payment term is auto-filled while browsing privately, it means browser-related issues. I'd suggest you start clearing cached data and Intuit-specific cookies to resolve the issue. Otherwise, use another supported, up-to-date browser.

Additionally, turning it off would be your best option if you don't want to auto-fill the last item you've ordered from the vendor.

Here's an article to help you learn about the changes you need to know when using the auto-recall feature to pre-fill transactions in QBO. 

Come back and update us here at any time so we can help you more with your concerns. Take care!